TDA7719 STMicroelectronics, TDA7719 Datasheet - Page 19

• Manufacturer Part Number: TDA7719
• Description: IC AUDIO PROCESSOR CAR 28-TSSOP
• Manufacturer: STMicroelectronics
• Type: Audio Processorr
• Series: -r

Specifications of TDA7719

• Applications: Radio
• Mounting Type: Surface Mount
• Package / Case: 28-TSSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

TDA7719
4.5
4.6
4.6.1
4.6.2
Softstep volume
When the volume-level is changed audible clicks could appear at the output. The root cause
of those clicks could either be a DC Offset before the volume-stage or the sudden change of
the envelope of the audio signal. With the Softstep feature both kinds of clicks could be
reduced to a minimum and are no more audible. The blend-time from one step to the next is
programmable as 5 ms or 10 ms. The softstep control is described in detail in
Bass
There are four parameters programmable in the bass stage:
Bass attenuation
Figure 9
Figure 9.
Bass center frequency
Figure 10
Figure 10. Bass center frequencies @ gain = 14 dB, Q = 1
shows the attenuation as a function of frequency at a center frequency of 80 Hz.
shows the four possible center frequencies 60, 80, 100 and 200 Hz.
Bass Control @ f
Doc ID 13698 Rev 4
c
= 80 Hz, Q = 1
Chapter
Description
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4.10.